If you wear a US size zero jean what is the waist size in inches?

If you are 19-21 waist you can wear 0's

no way im 25 inch waist and i can wear US 0's. you just have to have smaller hips

8/9/2011: It's true about the smaller hips--hip circumference affects pant sizing more than people realize, I think, especially in certain styles. When I've looked up sizing guidelines on sites for stores like Gap or Nordstrom, a 'size 0' tends to be matched with a 23-inch waist. I doubt there are many post-pubescent females alive who have 19-inch waists, haha (although if you do, cool).